n,i,h,l;main(){scanf("%d",&n);for(h;h<n-1;++h){for(i=2.5;i<n-h;++i)printf(" ");for(i=-1;i<2*h;++i)printf("*");puts("");}for(l;l<n-3;++l)printf(" ");puts("G*F");}\x0d
Note that non-ascii characters in the above source code will be escaped (such as \x9f).